JP2015102253A - Bath device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bath device making a notification to prompt a user to confirm whether hot water is stored in a bathtub if there is a probability that a bath circuit is frozen.SOLUTION: If a bath circuit 3 performs a freezing prevention operation within predetermined time after an operation for keeping a bath warm is carried out and any switch on a remote controller 32 is operated, there is a probability that a freezing prevention operation is subsequently performed on a display 35 of the remote controller 32 or a loudspeaker 36 and a notification is, therefore, made to recommend a user to store hot water in a bathtub 20 by a predetermined volume without unplugging the bathtub 20 to drain the hot water. It is, therefore, possible to make the user conscious to keep storing the hot water in the bathtub 20 during the freezing prevention operation and to enhance the possibility of performing the freezing prevention operation.

Description

  The present invention relates to a bath apparatus that stores hot water heated by a heating means in a bathtub and keeps it at a set temperature.

  Conventionally, if the value detected by the anti-freezing temperature sensor installed in the middle of the bath circuit is below a predetermined value, the hot water in the pipe is circulated by driving the bath circulation pump and circulating the hot water in the bath circuit. In bath equipment that performs anti-freezing operation to prevent freezing, when the detection value of the anti-freezing temperature sensor falls below a predetermined value, the water level sensor that detects the water level of the bathtub or the flow rate of hot water in the bath circuit is detected. If the presence of hot water in the bathtub cannot be detected by the flow rate sensor, it is determined that there is no hot water in the bathtub even though there is a possibility that the hot water in the bath circuit may freeze. By indicating that there is no hot water or turning on a predetermined lamp, the user is informed that there is no hot water in the bathtub and that the freeze prevention operation cannot be performed, and that the user can store hot water in the bathtub. Awareness So, there is a bath apparatus capable of antifreeze piping. (For example, Patent Document 1)

JP 2004-44863 A

  However, with this conventional device, when the detection value of the antifreeze temperature sensor becomes a predetermined value or less, if the water level sensor or flow rate sensor detects that there is no hot water in the bathtub, the remote control automatically Since there is no notification of hot water, the user may not be aware of the information when the user is away from the remote control, and the notification from the remote control may be implemented at midnight. There was a risk of discomfort.

  In order to solve the above-mentioned problems, in claim 1 of the present invention, an appliance main body, heating means installed in the appliance main body for heating hot water, and heat for raising the temperature of hot water by being heated by the heating means. An exchanger, a bath circuit that connects the heat exchanger and the bathtub with piping, a bath circulation pump that is installed in the middle of the bath circuit and circulates hot water in the piping, and a temperature at which the bath circuit starts freezing operation An anti-freezing temperature sensor to detect, a bath automatic switch for performing a heat insulation operation for keeping hot water in a bathtub at a set temperature for a predetermined time, a remote control comprising a plurality of the bath automatic switch and other operable switches, A controller that performs an anti-freezing operation for driving the bath circulation pump to circulate hot water in the bath circuit if the value detected by the anti-freezing temperature sensor is equal to or lower than a predetermined anti-freezing operation start temperature; In the obtained bath apparatus, the control unit, when any switch on the remote controller is operated within a predetermined time after the heat insulation operation is completed and after the freeze prevention operation is performed, the freeze prevention operation with the remote controller. This is a notification that there is a possibility that it will be carried out or that it is recommended that the hot water in the bathtub is not drained and a predetermined amount or more of hot water is stored.

  Further, in claim 2, the appliance main body, a heating means installed in the appliance main body for heating the hot water, a heat exchanger for heating the hot water by being heated by the heating means, the heat exchanger, A bath circuit that connects the bathtub to the pipe, a bath circulation pump that is installed in the middle of the bath circuit to circulate hot water in the pipe, a water level sensor that is installed in the middle of the bath circuit and detects the water level of the bathtub, and the bath circuit Anti-freezing temperature sensor for detecting the start temperature of the anti-freezing operation of the bath, a bath automatic switch for executing a heat insulation operation for keeping hot water in the bathtub at a set temperature for a predetermined time, the bath automatic switch and other operable switches If the value detected by the freeze prevention temperature sensor is equal to or lower than a predetermined freeze prevention operation start temperature, the bath circulation pump is driven to circulate hot water in the bath circuit. In the bath apparatus comprising a control unit for performing the anti-settling operation, the control unit is configured to detect the bathtub detected by the water level sensor within a predetermined time after the heat insulation operation is completed and after the anti-freezing operation is performed. If the water level of the hot water is continuously reduced, the remote control may carry out anti-freezing operation, or the hot water in the bathtub should not be drained and a predetermined amount or more of hot water should be stored. This is to notify that it is recommended.

  Further, in claim 3, the appliance main body, heating means installed in the appliance main body for heating the hot water, a heat exchanger for raising the temperature of the hot water by being heated by the heating means, and the heat exchanger, A bath circuit that connects the bathtub with a pipe, a hot water supply circuit composed of a water supply pipe through which low temperature water flows and a hot water supply pipe through which high temperature water flows, and a flow rate sensor that is installed in the middle of the hot water circuit and detects the flow rate of hot water A bath circulation pump that is installed in the middle of the bath circuit to circulate hot water in the pipe, a freeze prevention temperature sensor that detects a start temperature of the freeze prevention operation of the bath circuit, and hot water in the bathtub at a set temperature for a predetermined time A bath automatic switch for performing a heat insulation operation for keeping the temperature only, a remote controller including a plurality of the bath automatic switch and other operable switches, and a value detected by the freeze prevention temperature sensor being equal to or lower than a predetermined freeze prevention operation start temperature. If there is a bath apparatus comprising a control unit that performs an anti-freezing operation for driving the bath circulation pump to circulate hot water in the bath circuit, the control unit is configured to prevent the anti-freezing after the heat insulation operation is completed. If the flow sensor detects the flow of hot water within a predetermined time after the operation has been carried out, the remote control may carry out the freeze prevention operation, or the hot water in the bathtub will not be drained and a predetermined amount or more will be discharged. This is a notification that it is recommended to keep hot water stored.

  Further, in claim 4, the appliance main body, a heating means installed in the appliance main body for heating the hot water, a heat exchanger for heating the hot water by being heated by the heating means, the heat exchanger, A bath circuit that connects the bathtub to the pipe, a bath circulation pump that is installed in the middle of the bath circuit and circulates hot water in the pipe, a freeze prevention temperature sensor that detects a start temperature of the freeze prevention operation of the bath circuit, and a bathtub A bath automatic switch for performing a heat insulation operation for keeping hot water in a set temperature for a predetermined time, a remote control including a plurality of the bath automatic switch and other operable switches, and a detection value by the freeze prevention temperature sensor In a bath apparatus comprising a control unit that performs a freeze prevention operation for driving the bath circulation pump and circulating hot water in the bath circuit if the temperature is equal to or lower than a predetermined freeze prevention operation start temperature, After the heat insulation operation is completed and the value detected by the anti-freezing temperature sensor is equal to or lower than the start temperature of the anti-freezing operation and any switch on the remote controller is operated, the anti-freezing operation is performed by the remote controller. This is a notification that there is a possibility that it will be carried out or that it is recommended that the hot water in the bathtub is not drained and a predetermined amount or more of hot water is stored.

  Further, in claim 5, the appliance main body, heating means installed in the appliance main body for heating the hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger, A bath circuit that connects the bathtub to the pipe, a bath circulation pump that is installed in the middle of the bath circuit to circulate hot water in the pipe, a water level sensor that is installed in the middle of the bath circuit and detects the water level of the bathtub, and the bath circuit Anti-freezing temperature sensor for detecting the start temperature of the anti-freezing operation of the bath, a bath automatic switch for executing a heat insulation operation for keeping hot water in the bathtub at a set temperature for a predetermined time, the bath automatic switch and other operable switches If the value detected by the freeze prevention temperature sensor is equal to or lower than a predetermined freeze prevention operation start temperature, the bath circulation pump is driven to circulate hot water in the bath circuit. In the bath apparatus comprising a control unit for performing the anti-settling operation, the control unit is configured so that the water level becomes equal to or less than a start temperature of the anti-freezing operation after the heat-retaining operation is finished and the value detected by the anti-freezing temperature sensor If the water level in the bathtub detected by the sensor is continuously lowered, the remote control may be used to prevent freezing, or the hot water in the bathtub is not drained and a predetermined amount of hot water is stored. It is a notification that it is recommended to leave it as it is.

  Further, in claim 6, the appliance main body, heating means installed in the appliance main body for heating hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger, A bath circuit that connects the bathtub with a pipe, a hot water supply circuit composed of a water supply pipe through which low temperature water flows and a hot water supply pipe through which high temperature water flows, and a flow rate sensor that is installed in the middle of the hot water circuit and detects the flow rate of hot water A bath circulation pump that is installed in the middle of the bath circuit to circulate hot water in the pipe, a freeze prevention temperature sensor that detects a start temperature of the freeze prevention operation of the bath circuit, and hot water in the bathtub at a set temperature for a predetermined time A bath automatic switch for performing a heat insulation operation for keeping the temperature only, a remote controller including a plurality of the bath automatic switch and other operable switches, and a value detected by the freeze prevention temperature sensor being equal to or lower than a predetermined freeze prevention operation start temperature. If there is a bath apparatus comprising a control unit that performs an anti-freezing operation for driving the bath circulation pump to circulate hot water in the bath circuit, the control unit is configured to prevent the anti-freezing after the heat insulation operation is completed. When the detected value of the temperature sensor is equal to or lower than the start temperature of the freeze prevention operation and the flow of the hot water is detected by the flow sensor, the remote control may be implemented or the hot water in the bathtub is drained. Notifying that it is recommended to keep a predetermined amount or more of hot water stored.

  According to the first aspect of the present invention, when any switch on the remote control is operated within a predetermined time after the heat insulation operation is completed and the freeze prevention operation is performed, the freeze prevention operation is performed by the remote control. Since there is a notification that there is a possibility that it is possible or that it is recommended not to drain hot water in the bathtub and to store a predetermined amount or more of hot water, it is considered likely that anti-freezing operation will be carried out If the remote control switch is operated at the same time, it will be confirmed that there is a possibility that anti-freezing operation will be carried out in the future and that it is recommended to check the hot water in the bathtub. The operation can be conscious of the user, and since the notification is made when the user is awake, it is possible to prevent the generation of a sound that disturbs sleep.

  Further, according to claim 2, if the water level of the bathtub detected by the water level sensor continuously falls within a predetermined time after the heat insulation operation is completed and the freeze prevention operation is performed, the remote controller freezes the water. A notification to the effect that preventive operation may be carried out or that it is recommended that the hot water in the bathtub is not drained and that a predetermined amount or more of water is stored is recommended, so the freeze prevention operation is carried out. If the water level of the bathtub drops continuously when the possibility is high and the bathtub's tap is pulled out and the hot water is drained, confirm that there is a possibility that anti-freezing operation will be carried out in the future, and the hot water in the bathtub By notifying the recommended content, the user can be conscious of storing the hot water in the bathtub without draining it, and also notify when the user is awake Prevents the generation of sounds that disturb sleep Rukoto can.

  According to the third aspect, if the flow rate of the hot water is detected by the flow sensor within a predetermined time after the heat insulation operation is completed and the freeze prevention operation is performed, the freeze prevention operation may be performed by the remote controller. The hot water supply circuit is used when it is considered highly likely that anti-freezing operation will be carried out, because it is recommended that it is recommended not to drain hot water in the bathtub or to store more than a predetermined amount of hot water. If the hot water in the tub flows and is discharged, it is possible to drain the hot water in the tub by notifying that there is a possibility that anti-freezing operation will be carried out in the future and recommending that you check the hot water in the tub. Therefore, it is possible to prevent the user from being reminded that the sound is stored, and to notify the user when the user is awake.

  According to the fourth aspect of the present invention, after the heat insulation operation is completed and the value detected by the freeze prevention temperature sensor is equal to or lower than the start temperature of the freeze prevention operation and any switch on the remote controller is operated, the freeze prevention operation is performed by the remote controller. Notification that it is recommended that the hot water in the bathtub is not drained and that a predetermined amount of hot water or more is recommended to be stored, so the hot water in the bath circuit may freeze. If there is a switch operation on the remote control, there is a possibility that anti-freezing operation may be carried out in the future and informs the recommended content to check the hot water in the bathtub. The confirmation operation can be conscious of the user, and since the notification is performed when the user is awake, it is possible to prevent the generation of a sound that disturbs sleep.

  Further, according to claim 5, after the heat insulation operation is completed and the value detected by the antifreezing temperature sensor is equal to or lower than the start temperature of the antifreezing operation, the water level of the bathtub detected by the water level sensor continuously decreases. If the remote control is informed that there is a possibility that the freeze prevention operation may be carried out or that it is recommended not to drain the hot water in the bathtub, but to store more than a predetermined amount of hot water, the bath circuit If there is a possibility that the hot water in the bathtub will freeze and the bathtub's water level drops continuously and the bathtub is unplugged and the hot water is drained, there is a possibility that anti-freezing operation may be carried out in the future, and the hot water in the bathtub By notifying the recommended content to check the user, it is possible to make the user aware of storing the hot water in the bathtub without draining it, and also notify the user when the user is awake. The sound that disturbs sleep It is possible to prevent.

  According to the sixth aspect of the present invention, after the heat insulation operation is completed and the detected value of the antifreezing temperature sensor is equal to or lower than the start temperature of the antifreezing operation and the flow of hot water is detected by the flow sensor, the antifreezing operation is performed by the remote controller. If there is a possibility that the hot water in the bath circuit may freeze, it is recommended that the hot water in the bathtub is not drained and it is recommended to keep the hot water over a predetermined amount. If the hot water in the hot water supply circuit flows and is discharged, the antifreeze operation may be carried out in the future, and the recommended content to check the hot water in the bathtub is informed so that the hot water in the bathtub can be reduced. It is possible to make the user aware of storing without draining, and since the notification is made when the user is awake, it is possible to prevent the generation of sounds that disturb sleep.

Schematic configuration diagram showing an embodiment of the present invention Control block diagram of the embodiment Flowchart for explaining notification control by a remote controller in the first embodiment of the present invention The flowchart explaining the alerting | reporting control with a remote control in 2nd Embodiment of the invention. Flowchart for explaining notification control by a remote controller in the third embodiment of the invention Flowchart for explaining notification control by a remote controller in the fourth embodiment of the invention Schematic configuration diagram for explaining another embodiment of the invention

Next, an embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes an appliance body that is provided with a hot water supply circuit 2, a bath circuit 3, and a hot water filling circuit 4, and 5 is a combustion section as a heating means including a burner 6 that burns fuel such as kerosene. is there.

  The hot water supply circuit 2 includes a water supply pipe 8 in which a water tap 7 is installed, and a hot water supply pipe 10 in which high-temperature water heated by a heat exchanger 9 installed in the combustion section 5 and heating hot water in the pipe flows. Has been.

  11 is a water supply temperature sensor for detecting the temperature of water in the water supply pipe 8, 12 is a water supply flow rate sensor for detecting the flow rate of water flowing through the water supply pipe 8, and 13 is installed in the middle of the hot water supply pipe 10, and one end of the water supply pipe 8 is a hot water mixing valve that mixes hot water by connecting with a water supply bypass pipe 14 that guides the water in 8, 15 is a water proportional valve that controls the flow rate of hot water, and 16 detects the temperature of hot water mixed by the hot water mixing valve 13. It is a hot water supply temperature sensor.

  17 is a hot water pipe connected to the hot water supply pipe 10, and hot water in the hot water pipe 17 is discharged by opening the hot water tap 18 installed in a washroom or the like.

  The bath circuit 3 includes a bath return pipe 21 that flows bathtub water heated by the bath heat exchanger 19 installed in the combustion section 5 into the bathtub 20, and bath water in the bathtub 20 flows into the bath heat exchanger 19. And a bath-out pipe 22 to be configured.

  23 is in the middle of the bath return pipe 21 and has a bath three-way valve connected at one end to a hot water filling circuit 4 to be described later, 24 is a bath circulation pump for forcibly circulating bath water in the bath circuit 3, and 25 is circulating bath water. The bath temperature sensor 26 detects the temperature, the bath flow sensor 26 detects whether the bathtub water in the pipe is flowing, and the bath water level sensor 27 detects the water level of the bathtub water in the bathtub 20.

  The hot water filling circuit 4 is composed of a hot water filling pipe 28 which branches off from the hot water supply pipe 10 and is connected to one end of a bath three-way valve 23, and 29 opens and closes the flow of hot water in the hot water filling pipe 28 by opening and closing the valve. A hot water solenoid valve to be controlled, 30 is a hot water flow rate sensor for detecting the flow rate of hot water flowing in the hot water tube 28, and 31 is a double hot water device installed in a double manner so that the hot water in the hot water tube 28 does not flow backward. It is a stop valve.

  32 is a remote controller that can be set in various ways by operating a switch, and fills the bathtub 20 with a set amount of hot water at a set temperature, and performs a chasing operation when the bath temperature drops by a predetermined value from the set temperature after the hot water is filled. A bath automatic switch 33 for instructing the start / end of bath automatic operation for performing a bath heat retention operation for a predetermined heat retention time (for example, 4 hours), a temperature change switch 34 for changing the set temperature of hot water supply or bath, A display 35 for displaying time and set information, and a speaker 36 for notifying the change contents by voice when the bath automatic switch 33 is operated or when the temperature change switch 34 changes the set temperature of the hot water or bath. Is provided.

  Reference numeral 37 denotes an internal temperature sensor as an anti-freezing temperature sensor that is installed on the exterior of the main body 1 and detects the ambient temperature in the main body 1.

  Reference numeral 38 denotes a control unit composed of a microcomputer, which is provided with a temperature comparison means 39 for comparing the temperature detected by the internal temperature sensor 37 with a preset reference value. Based on the value detected by the sensor, the combustion ON / OFF control by the burner 6 and the opening degree of the hot water supply mixing valve 13 are changed, and hot water at the temperature set by the user with the remote control 32 is supplied to the hot water tap 18 and the bathtub 20. Adjust as supplied.

Next, the freeze prevention operation in this embodiment will be described.
After the heat insulation operation time of the bath automatic operation is completed, the control unit 38 continues to check the detection value of the internal temperature sensor 37 every predetermined time, and the detection value of the internal temperature sensor 37 indicates the predetermined anti-freezing operation. When the temperature falls below the start temperature (for example, 3 ° C.), it is assumed that hot water in the bath circuit 3 may freeze, and the hot water in the bath circuit 3 is circulated in the piping by driving the bath circulation pump 24. Prevents pipes from rupturing by freezing.

Next, the control related to notification by the remote controller 32 when there is a possibility of performing the freeze prevention operation in the first embodiment of the present invention will be described based on the flowchart of FIG.
First, the control unit 38 determines whether or not the predetermined time of the heat insulation operation has elapsed (step S101), and if the four hours have elapsed, the controller temperature sensor 37 uses the internal temperature sensor 37 every 10 minutes from the end of the heat insulation operation. The detected value is confirmed and the latest detected value is stored (step S102).

  After confirming the detection value of the internal temperature sensor 37 in step S102 and storing the latest detection value, the control unit 38 determines whether any of the switches on the remote controller 32 has been operated (step S103). If any switch has been operated, the process proceeds to the next step. If the switch has not been operated, the detection value of the internal temperature sensor 37 is confirmed again every 10 minutes in step S102.

  If any switch on the remote control 32 is operated in step S103, the control unit 38 determines whether or not the freeze prevention operation is performed within the predetermined time of 24 hours (step S104), and freezes within 24 hours. If it is determined that the prevention operation has been carried out, a predetermined notification sound is emitted from the speaker 36 of the remote control 32, and there is a possibility that the anti-freezing operation will be carried out in the future. The recommended content for storing hot water is displayed on the display 35 (step S105).

  If the freeze prevention operation is not performed within 24 hours in step S104, the control unit 38 determines whether the latest detected value of the internal temperature sensor 37 stored in step S102 is 3 ° C. or less, which is the start temperature of the freeze prevention operation. Judgment is made by the comparison means 39 (step S106), and if it is judged that the latest detected value in the internal temperature sensor 37 is 3 ° C. or less, the process proceeds to step S105 and a predetermined notification sound is emitted from the speaker 36 of the remote control 32, Since there is a possibility that anti-freezing operation will be carried out in the future, it is displayed on the display 35 to recommend that a predetermined amount of hot water should be stored without draining and draining the bathtub 20, and the internal temperature sensor 37. If the detected value exceeds 3 ° C., the control content of the switch operated by the remote controller 32 is executed (step S107).

  As described above, when the bath heat insulation operation is completed, the detection value of the internal temperature sensor 37 is confirmed every 10 minutes, the latest detection value is stored, and any switch on the remote controller 32 is operated. If the freeze prevention operation is performed within 24 hours or the latest detected value of the stored internal temperature sensor 37 is 3 ° C. or less, hot water is present in the bathtub 20 by the display 35 or the speaker 36 of the remote controller 32. In order to perform notification for prompting confirmation of hot water in the bathtub 20 when a user is present near the remote controller 32 when there is a high possibility that the pipes constituting the bath circuit 3 will be frozen. The user can be made aware that a predetermined amount or more of hot and cold water is stored in the bathtub 20 so that the freeze prevention operation can be performed.

Next, control related to notification by the remote controller 32 when there is a possibility of performing the freeze prevention operation in the second embodiment of the present invention will be described based on the flowchart of FIG.
First, the control unit 38 determines whether or not the predetermined time of the heat insulation operation has elapsed (step S201), and if the four hours have passed, the controller 38 uses the internal temperature sensor 37 every 10 minutes from the end of the heat insulation operation. The detected value is confirmed and the latest detected value is stored (step S202).

  After confirming the detection value of the internal temperature sensor 37 in step S202 and storing the latest detection value, the control unit 38 determines whether the water level has continuously decreased from the detection value of the bath water level sensor 27 (step S202). S203), if the water level of the bathtub 20 is continuously reduced, it is determined whether or not the freeze prevention operation is performed within 24 hours, which is a predetermined time (step S204), and the freeze prevention operation is performed within 24 hours. Then, a predetermined notification sound is emitted from the speaker 36 of the remote control 32, and there is a possibility that the anti-freezing operation will be carried out in the future, so that a predetermined amount of hot water is stored without removing the stopper of the bathtub 20 and draining. The recommended content is displayed on the display 35 (step S205).

  If the freeze prevention operation is not performed within 24 hours in step S204, the control unit 38 determines whether the latest detected value of the internal temperature sensor 37 stored in step S202 is 3 ° C. or less, which is the start temperature of the freeze prevention operation. Judgment is made by the comparison means 39 (step S206), and if it is judged that the latest detected value in the internal temperature sensor 37 is 3 ° C. or less, the process proceeds to step S205 and a predetermined notification sound is emitted from the speaker 36 of the remote control 32, Since there is a possibility that anti-freezing operation will be carried out in the future, it is displayed on the display 35 to recommend that a predetermined amount of hot water should be stored without draining and draining the bathtub 20, and the internal temperature sensor 37. If the latest detected value exceeds 3 ° C., the detected value in the bath water level sensor 27 is confirmed again in step S202.

  As described above, after the heat insulation operation of the bathtub 20 is completed, the freeze prevention operation is performed within a predetermined time or the latest detected value in the stored internal temperature sensor 37 is 3 ° C. or less, and the bath water level sensor 27 If it is determined that the water level of the bathtub 20 is continuously lowered, the freeze prevention operation may be performed from the remote controller 32, and the recommended content is to store a predetermined amount of hot water in the bathtub 20 without draining it. Therefore, when there is a possibility that anti-freezing operation may be carried out, in order to detect the state in which the tap of the bathtub 20 is removed and the hot water is drained, and the remote control 32 is informed, the anti-freezing operation will be performed in the future. Since there is a possibility that the operation will be carried out, the user can be conscious of not pulling out the stopper of the bathtub 20 and draining hot water.

Next, the control related to notification by the remote controller 32 when there is a possibility of performing the freeze prevention operation in the third embodiment of the present invention will be described based on the flowchart of FIG.
First, the control unit 38 determines whether or not the predetermined time of the heat insulation operation has elapsed (step S301), and if the four hours have passed, the controller temperature sensor 37 uses the internal temperature sensor 37 every 10 minutes from the end of the heat insulation operation. The detected value is confirmed and the latest detected value is stored (step S302).

  After confirming the detection value at the internal temperature sensor 37 in step S302 and storing the latest detection value, the control unit 38 determines whether the detection flow rate at the feed water flow rate sensor 12 is 3 L / min or more (step S303). If the detected flow rate is 3 L / min or more, it is determined whether or not the freeze prevention operation has been performed within the predetermined time of 24 hours (step S304). Since there is a possibility that a predetermined notification sound is emitted from the speaker 36 and the anti-freezing operation may be carried out in the future, the display 35 recommends that a predetermined amount of hot water be stored without draining the hot water in the bathtub 20. It is displayed (step S305).

  If the freeze prevention operation is not performed within 24 hours in step S304, the control unit 38 determines whether the latest detected value of the internal temperature sensor 37 stored in step S302 is 3 ° C. or less, which is the start temperature of the freeze prevention operation. Judgment is made by the comparison means 39 (step S306), and if it is judged that the latest detected value by the internal temperature sensor 37 is 3 ° C. or less, the process proceeds to step S305 and a predetermined notification sound is emitted from the speaker 36 of the remote control 32, Since there is a possibility that anti-freezing operation will be carried out in the future, it is displayed on the display 35 to recommend that a predetermined amount of hot water should be stored without draining and draining the bathtub 20, and the internal temperature sensor 37. If the detected value exceeds 3 ° C., the detected value in the bath water level sensor 27 is confirmed again in step S302.

  As described above, after the heat insulation operation of the bathtub 20 is completed, the freeze prevention operation is performed within a predetermined time or the latest detected value in the stored internal temperature sensor 37 is 3 ° C. or less, and the water supply flow rate sensor 12 If the flow of hot water in the hot water supply circuit 2 is detected by this, there is a possibility that the freeze prevention operation may be performed from the remote controller 32, and the recommended content to store a predetermined amount of hot water in the bathtub 20 without draining is notified. Therefore, when there is a possibility that anti-freezing operation may be carried out, the hot water tap 18 installed in the washroom or the like is opened to detect the state in which the hot water in the hot water supply circuit 2 has flowed and notify the remote controller 32 Therefore, the anti-freezing operation may be carried out in the future, so that the user can be conscious not to remove the tap of the bathtub 20 and drain the hot water.

Next, notification control for prompting confirmation of hot water in the bathtub 20 in the fourth embodiment of the present invention will be described based on the flowchart of FIG.
First, the control unit 38 determines whether or not 4 hours, which is a predetermined time of the heat insulation operation, has elapsed (step S401), and if the 4 hours have passed, the controller temperature sensor 37 uses the internal temperature sensor 37 every 10 minutes from the end of the heat insulation operation. And the latest three times are stored (step S402).

  After storing the latest three detection values detected by the internal temperature sensor 37 in step S402, the control unit 38 determines whether any of the switches on the remote controller 32 has been operated (step S403), and either switch. If the switch is operated, the process proceeds to the next step. If the switch is not operated, the detected value of the internal temperature sensor 37 is confirmed and stored every 10 minutes again in step S402.

  If any one of the switches on the remote controller 32 is operated in step S403, the control unit 38 determines whether or not the freeze prevention operation is performed within the predetermined time of 24 hours (step S404), and within 24 hours. If the freeze prevention operation is performed, a predetermined notification sound is emitted from the speaker 36 of the remote control 32, and the freeze prevention operation may be performed in the future. The recommended content for storing hot water is displayed on the display 35 (step S405).

  If the freeze prevention operation has not been performed within 24 hours in step S404, the control unit 38 confirms by the temperature comparison means 39 whether or not the latest detected value in the internal temperature sensor 37 is 7 ° C. or less, and stores it. It is determined whether or not the latest detected value of the internal temperature sensor 37 has decreased continuously three times (step S406), and the latest detected value of the internal temperature sensor 37 is 7 ° C. or less and continuously three times. If it is determined that the value detected by the internal temperature sensor 37 has decreased, the process proceeds to step S405, where it is estimated that the temperature will be equal to or lower than the start temperature of the freeze prevention operation, and a predetermined notification sound is emitted from the speaker 36 of the remote controller 32. Since there is a possibility that anti-freezing operation may be carried out in the future, the display 35 displays a content recommending that a predetermined amount of hot water be stored without draining the tub 20 and draining, conditions If not satisfied, it executes the control by the switch of the remote control 32 has been operated (step S407).

  As described above, when the heat insulation operation of the bath is completed, the detection value of the internal temperature sensor 37 is confirmed every 10 minutes, the latest three times are stored, and whether the freeze prevention operation has been performed within a predetermined time. If the latest detected value in the internal temperature sensor 37 is 7 ° C. or less and the detected value of the internal temperature sensor 37 has decreased three times continuously, and any switch on the remote control 32 is operated, It is estimated that there is a possibility that piping constituting the bath circuit 3 may freeze because the display 35 and the speaker 36 of the remote control 32 are used to notify the content recommended to check whether hot water is present in the bathtub 20. If there is a user in the vicinity of the remote control 32 at that time, in order to notify the user of confirmation of hot water in the bathtub 20, a predetermined amount or more of hot water required for the freeze prevention operation is stored in the bathtub 20, and the freeze prevention operation is performed. Implementation possible It is possible to give consciousness to the user as to.

  In the present embodiment, the internal temperature sensor 37 is used as the anti-freezing temperature sensor to determine whether or not the anti-freezing operation is performed. However, the present invention is not limited to this. For example, the water temperature sensor 11, the hot water temperature sensor 16, and the bath temperature sensor 25 are used. The content of determining whether or not the anti-freezing operation is started may be used as the anti-freezing temperature sensor, and any means capable of determining whether or not the hot water in the bath circuit 3 is frozen may be used.

  In addition, the start temperature of the freeze prevention operation used in the present embodiment, the value detected by the internal temperature sensor 37 at every predetermined time, the number of detections by the internal temperature sensor 37 continuously decreased, and the freeze prevention operation are performed. For example, the flow rate value detected by the feed water flow rate sensor 12 and the like for a predetermined period of time after the operation is an example, and can be changed without departing from the spirit of the present invention.

  Further, in the present embodiment, the hot water supply apparatus configured to store the hot water in the bath heat exchanger 19 heated by the burner 6 in the bathtub 20 has been described. However, as shown in FIG. A hot water storage type hot water supply device that raises the hot water in the bathtub 20 to a set temperature by heating the hot water in the bath circuit 3 by a bath heat exchanger 19 installed in the hot water storage tank by driving the circulation pump 24. But it is applicable.

  In the present embodiment, the bath circulation pump 24 is driven during the freeze prevention operation to circulate hot water in the bath circuit 3 to prevent freezing in the piping. During the normal operation, the anti-freeze heater is installed in the middle of 3 and waits with the power off. When the value detected by the internal temperature sensor 37 falls below the predetermined start temperature of the anti-freeze operation, the anti-freeze heater is energized. Then, by turning on the power supply, the pipe constituting the bath circuit 3 is heated to prevent the pipe from freezing.

DESCRIPTION OF SYMBOLS 1 Appliance body 2 Hot water supply circuit 3 Bath circuit 5 Combustion part 8 Water supply pipe 10 Hot water supply pipe 12 Water supply flow rate sensor 19 Bath heat exchanger 20 Bath 24 Bath circulation pump 32 Remote control 33 Bath automatic switch 37 Internal temperature sensor 38 Control part

Claims (6)

  An appliance main body, a heating means installed in the appliance main body for heating hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger and the bathtub are connected by piping. A bath circuit, a bath circulation pump installed in the middle of the bath circuit for circulating hot water in the pipe, a freeze prevention temperature sensor for detecting a start temperature of the freeze prevention operation of the bath circuit, and hot water in the bathtub at a set temperature. A bath automatic switch for performing a heat insulation operation for keeping heat for a predetermined time, a remote controller including a plurality of the bath automatic switch and other operable switches, and a detection value by the freeze prevention temperature sensor is a predetermined freeze prevention operation start temperature. The bath is provided with a control unit that performs anti-freezing operation for driving the bath circulation pump to circulate hot water in the bath circuit. If any switch on the remote control is operated within a predetermined time after the completion of the freeze prevention operation and the freeze prevention operation is performed, there is a possibility that the freeze prevention operation may be performed with the remote control or in the bathtub A bath apparatus characterized by notifying that hot water is not drained but recommending that a predetermined amount or more of hot water be stored.   An appliance main body, a heating means installed in the appliance main body for heating hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger and the bathtub are connected by piping. A bath circuit, a bath circulation pump that is installed in the middle of the bath circuit and circulates hot water in the pipe, a water level sensor that is installed in the middle of the bath circuit and detects the water level of the bathtub, and a start temperature of the freeze prevention operation of the bath circuit An anti-freezing temperature sensor that detects water, a bath automatic switch that executes a heat-retaining operation for keeping hot water in a bathtub at a set temperature for a predetermined time, a remote control that includes the bath automatic switch and other operable switches, If the value detected by the anti-freezing temperature sensor is equal to or lower than a predetermined anti-freezing operation start temperature, the anti-freezing operation is performed in which the bath circulation pump is driven to circulate hot water in the bath circuit. In the bath apparatus including a control unit, the control unit continuously detects the water level of the bathtub detected by the water level sensor within a predetermined time after the heat insulation operation is completed and after the freeze prevention operation is performed. If it has decreased, a notification that the freeze control may be carried out with the remote control or that it is recommended that the hot water in the bathtub is not drained and that a predetermined amount or more of hot water is stored is recommended. A bath apparatus characterized by performing.   An appliance main body, a heating means installed in the appliance main body for heating hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger and the bathtub are connected by piping. A hot water supply circuit composed of a bath circuit, a hot water supply pipe through which low temperature water flows, and a hot water supply pipe through which high temperature water flows, a flow rate sensor installed in the hot water supply circuit to detect the flow rate of hot water, and in the middle of the bath circuit A bath circulation pump that circulates hot and cold water in the installed piping, an anti-freezing temperature sensor that detects the start temperature of the anti-freezing operation of the bath circuit, and a warming operation that keeps the hot and cold water in the bathtub at the set temperature for a predetermined time. The bath automatic switch, a remote controller including a plurality of the bath automatic switch and other operable switches, and the bath circulation circuit if the value detected by the freeze prevention temperature sensor is equal to or lower than a predetermined freeze prevention operation start temperature. And a control unit that performs an anti-freezing operation for circulating hot water in the bath circuit by driving a pump, wherein the control unit is configured to perform the anti-freezing operation after the heat insulation operation is completed and after the anti-freezing operation is performed. If the flow sensor detects the flow of hot water within the predetermined time, the remote control may be used to prevent freezing, or the hot water in the bathtub is not drained and a predetermined amount or more of hot water is stored. A bath apparatus characterized in that it is recommended to keep it.   An appliance main body, a heating means installed in the appliance main body for heating hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger and the bathtub are connected by piping. A bath circuit, a bath circulation pump installed in the middle of the bath circuit for circulating hot water in the pipe, a freeze prevention temperature sensor for detecting a start temperature of the freeze prevention operation of the bath circuit, and hot water in the bathtub at a set temperature. A bath automatic switch for performing a heat insulation operation for keeping heat for a predetermined time, a remote controller including a plurality of the bath automatic switch and other operable switches, and a detection value by the freeze prevention temperature sensor is a predetermined freeze prevention operation start temperature. The bath is provided with a control unit that performs anti-freezing operation for driving the bath circulation pump to circulate hot water in the bath circuit. If the value detected by the freeze prevention temperature sensor is equal to or lower than the start temperature of the freeze prevention operation and any of the switches on the remote control is operated, the freeze prevention operation may be performed by the remote control. A bath apparatus characterized by notifying that it is recommended that the hot water in the bathtub is not drained and a predetermined amount or more of hot water is stored.   An appliance main body, a heating means installed in the appliance main body for heating hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger and the bathtub are connected by piping. A bath circuit, a bath circulation pump that is installed in the middle of the bath circuit and circulates hot water in the pipe, a water level sensor that is installed in the middle of the bath circuit and detects the water level of the bathtub, and a start temperature of the freeze prevention operation of the bath circuit An anti-freezing temperature sensor that detects water, a bath automatic switch that executes a heat-retaining operation for keeping hot water in a bathtub at a set temperature for a predetermined time, a remote control that includes the bath automatic switch and other operable switches, If the value detected by the anti-freezing temperature sensor is equal to or lower than a predetermined anti-freezing operation start temperature, the anti-freezing operation is performed in which the bath circulation pump is driven to circulate hot water in the bath circuit. In the bath apparatus provided with a control unit, the control unit is configured to detect the bathtub after the heat-retaining operation is finished and the value detected by the anti-freezing temperature sensor is equal to or lower than the start temperature of the anti-freezing operation and is detected by the water level sensor. If the water level of the hot water is continuously reduced, the remote control may carry out anti-freezing operation, or the hot water in the bathtub should not be drained and a predetermined amount or more of hot water should be stored. A bath apparatus characterized by providing a notification of recommendation.   An appliance main body, a heating means installed in the appliance main body for heating hot water, a heat exchanger for heating the hot water by being heated by the heating means, and the heat exchanger and the bathtub are connected by piping. A hot water supply circuit composed of a bath circuit, a hot water supply pipe through which low temperature water flows, and a hot water supply pipe through which high temperature water flows, a flow rate sensor installed in the hot water supply circuit to detect the flow rate of hot water, and in the middle of the bath circuit A bath circulation pump that circulates hot and cold water in the installed piping, an anti-freezing temperature sensor that detects the start temperature of the anti-freezing operation of the bath circuit, and a warming operation that keeps the hot and cold water in the bathtub at the set temperature for a predetermined time. The bath automatic switch, a remote controller including a plurality of the bath automatic switch and other operable switches, and the bath circulation circuit if the value detected by the freeze prevention temperature sensor is equal to or lower than a predetermined freeze prevention operation start temperature. And a control unit that performs a freeze prevention operation for circulating hot water in the bath circuit by driving a pump, wherein the control unit detects a value detected by the freeze prevention temperature sensor after completion of the heat insulation operation. Is below the start temperature of the freeze prevention operation and when the flow sensor detects the flow of hot water, the remote control may carry out the freeze prevention operation, or the hot water in the bathtub is not drained and a predetermined amount or more A bath apparatus characterized in that it is recommended to keep hot water stored.

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